Doping-Induced Anisotropic Self-Assembly of Silver Icosahedra in [Pt2Ag23Cl7(PPh3)10] Nanoclusters
M.S. Bootharaju, S.M. Kozlov, Z. Cao, M. Harb, N.i Maity, A. Shkurenko, M.R. Parida, M.N. Hedhili, M. Eddaoudi, O.F. Mohammed, O.M. Bakr, L. Cavallo, J.-M. Basset
DOI: 10.1021/jacs.6b11875, (2017)
Silver Icosahedra, Nanoclusters
Atomically precise self-assembled architectures of noble metals with
unique surface structures are necessary for prospective applications.
However, the synthesis of such structures based on silver is challenging
because of their instability. In this work, by developing a selective
and controlled doping strategy, we synthesized and characterized a
rod-shaped, charge-neutral, diplatinum-doped Ag nanocluster (NC) of [Pt2Ag23Cl7(PPh3)10].
Its crystal structure revealed the self-assembly of two Pt-centered Ag
icosahedra through vertex sharing. Five bridging and two terminal
chlorides and 10 PPh3 ligands were found to stabilize the
cluster. Electronic structure simulations corroborated structural and
optical characterization of the cluster and provided insights into the
effect of the Pt dopants on the optical properties and stability of the
cluster. Our study will open new avenues for designing novel
self-assembled NCs using different elemental dopants.
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